tegra132: Replace use of clk_rst with CLK_RST_REG

tegra132: Replace use of clk_rst with CLK_RST_REG

Also, get rid of unused clk_rst variables.

BUG=None
BRANCH=None
TEST=Compiles successfully

Change-Id: I6487162454159a81b31fe0d6d39c2bdbed3f859a
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 030081fe85fc9609fdf2003cf51b7350e08f0429
Original-Change-Id: I880ae5c396c33006f6b184cca7f171e4373f4016
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/220720
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9105
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>